GUWAHATI, April 2: Four railway staff – Pradip Kumar Mohali, senior section engineer/P-Way/Azamgar; Arindam Paul, loco pilot/goods/Alipurduar junction; Tarun Kumar Biswas, senior assistant loco pilot; and Nikunja Kumar Boro, track maintainer-grade-IV/Rangiya – , were awarded by NF Railway General Mager Sanjive Roy for showing exceptiol devotion towards duty, a press release said.